yes, that would be fine
On Fri, 20 Jul 2012, Colin Reveley wrote:
so I can simply label the whole surface, if I'm confident? I don't know much
about labels and how to make them (I use caret mainly, since I do monkey). I
presume it's what one would imagine, and there's a way to figure it out.
On 20 July 2012 19:36, Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote:
Hi Colin
the hires label is meant to be the portion of the surface that
is far enough into the FOV/coil that you are confident of the
data there.
cheers
Bruce
On Fri, 20 Jul 2012, Colin Reveley wrote:
Hi -
I'm using freesurfer with an ex-vivo MTR of a
monkey, at 0.25mm.
unfortunately the data doesn't fit into 256^3, and
anyway things are much
faster, and decent results are to be had by
downsampling to 0.5mm.
I did notice this mris_refine_surfaces. That looked
great. I can fit 0.32mm
into 256^3, so I did that, and called it 0.64mm, and
treated it the same way
I treated the 0.5mm (nu_correct etc etc) to get my
"hires.mgz" for
mris_refine_surfaces
then I noticed mris_refine_surfaces wants
?h_hires.label as well.
a) how would I make ?h_hires.label
b) does my hires.mgz even have to be 256^3? If not,
I could use the actual
250um data to refine the surface, and that would be
nice.
c) I don't suppose there would be any chance of not
only using a hi res
volume to refine the surfaces, but also upsampling
the surfaces too? There
is a reason I might want them upsampled. It would be
nice for the ?h.white
mesh to sort of approximately have a node for each
voxel face. It's to do
with more accurately mapping certain data in CARET
later on.
I'd settle for just how to make ?h_hires.label and
use mris_refine_surfaces
though :)
cheers,
Colin
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